perf tools: Move tracing_path stuff under same namespace

Renaming all functions touching tracing_path under same namespace. New
interface is:

  char tracing_path[];
  - tracing mount path

  char tracing_events_path[];
  - tracing mount/events path

  void tracing_path_set(const char *mountpoint);
  - setting directly tracing_path(_events), used by --debugfs-dir option

  const char *tracing_path_mount(void);
  - initial setup of tracing_(events)_path, called from perf.c
    mounts debugfs/tracefs if needed and possible

  char *get_tracing_file(const char *name);
  void put_tracing_file(char *file);
  - get/put tracing file path

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1441180605-24737-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/perf.c

@@ -214,7 +214,7 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 				fprintf(stderr, "No directory given for --debugfs-dir.\n");
 				usage(perf_usage_string);
 			}
-			perf_debugfs_set_path((*argv)[1]);
+			tracing_path_set((*argv)[1]);
 			if (envchanged)
 				*envchanged = 1;
 			(*argv)++;
@@ -230,7 +230,7 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 			(*argv)++;
 			(*argc)--;
 		} else if (!prefixcmp(cmd, CMD_DEBUGFS_DIR)) {
-			perf_debugfs_set_path(cmd + strlen(CMD_DEBUGFS_DIR));
+			tracing_path_set(cmd + strlen(CMD_DEBUGFS_DIR));
 			fprintf(stderr, "dir: %s\n", tracing_path);
 			if (envchanged)
 				*envchanged = 1;
@@ -517,8 +517,10 @@ int main(int argc, const char **argv)
 	cmd = perf_extract_argv0_path(argv[0]);
 	if (!cmd)
 		cmd = "perf-help";
-	/* get debugfs mount point from /proc/mounts */
-	perf_debugfs_mount();
+
+	/* get debugfs/tracefs mount point from /proc/mounts */
+	tracing_path_mount();
+
 	/*
 	 * "perf-xxxx" is the same as "perf xxxx", but we obviously:
 	 *

tools/perf/util/util.c

@@ -390,7 +390,7 @@ void set_term_quiet_input(struct termios *old)
 	tcsetattr(0, TCSANOW, &tc);
 }
 
-static void set_tracing_events_path(const char *tracing, const char *mountpoint)
+static void __tracing_path_set(const char *tracing, const char *mountpoint)
 {
 	snprintf(tracing_path, sizeof(tracing_path), "%s/%s",
 		 mountpoint, tracing);
@@ -398,7 +398,7 @@ static void set_tracing_events_path(const char *tracing, const char *mountpoint)
 		 mountpoint, tracing, "events");
 }
 
-static const char *__perf_tracefs_mount(void)
+static const char *tracing_path_tracefs_mount(void)
 {
 	const char *mnt;
 
@@ -406,12 +406,12 @@ static const char *__perf_tracefs_mount(void)
 	if (!mnt)
 		return NULL;
 
-	set_tracing_events_path("", mnt);
+	__tracing_path_set("", mnt);
 
 	return mnt;
 }
 
-static const char *__perf_debugfs_mount(void)
+static const char *tracing_path_debugfs_mount(void)
 {
 	const char *mnt;
 
@@ -419,27 +419,27 @@ static const char *__perf_debugfs_mount(void)
 	if (!mnt)
 		return NULL;
 
-	set_tracing_events_path("tracing/", mnt);
+	__tracing_path_set("tracing/", mnt);
 
 	return mnt;
 }
 
-const char *perf_debugfs_mount(void)
+const char *tracing_path_mount(void)
 {
 	const char *mnt;
 
-	mnt = __perf_tracefs_mount();
+	mnt = tracing_path_tracefs_mount();
 	if (mnt)
 		return mnt;
 
-	mnt = __perf_debugfs_mount();
+	mnt = tracing_path_debugfs_mount();
 
 	return mnt;
 }
 
-void perf_debugfs_set_path(const char *mntpt)
+void tracing_path_set(const char *mntpt)
 {
-	set_tracing_events_path("tracing/", mntpt);
+	__tracing_path_set("tracing/", mntpt);
 }
 
 char *get_tracing_file(const char *name)

tools/perf/util/util.h

@@ -85,8 +85,8 @@ extern const char *graph_dotted_line;
 extern char buildid_dir[];
 extern char tracing_path[];
 extern char tracing_events_path[];
-extern void perf_debugfs_set_path(const char *mountpoint);
-const char *perf_debugfs_mount(void);
+extern void tracing_path_set(const char *mountpoint);
+const char *tracing_path_mount(void);
 char *get_tracing_file(const char *name);
 void put_tracing_file(char *file);